task-99(店铺中心): 实现店铺中心响应式表格

新增 shop-table-layout.ts：店铺/密钥列表列定义与按视口宽度筛选可见列，
店铺名/操作等关键列任意宽度保留。

TDD: task-99.test.ts 8 用例先 RED 后 GREEN。

admin-frontend-vue/tests/task-99.test.ts

@@ -0,0 +1,63 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  SHOP_KEYS_COLUMNS,
+  SHOP_MANAGE_COLUMNS,
+  shopColumnsForWidth,
+} from '../src/pages/shop/shop-table-layout.ts'
+
+test('test_task_099_shop_table_responsive_normal_primary_path', () => {
+  // 正常主路径：宽屏(≥1200px)显示店铺表全部分组列。
+  const wide = shopColumnsForWidth(SHOP_MANAGE_COLUMNS, 1280)
+  assert.equal(wide.length, SHOP_MANAGE_COLUMNS.length)
+  assert.ok(wide.some((c) => c.key === 'account'))
+  assert.ok(wide.some((c) => c.key === 'password'))
+})
+
+test('test_task_099_shop_table_responsive_normal_variant_input', () => {
+  // 正常变体：密钥表在常规宽度保留关键列。
+  const cols = shopColumnsForWidth(SHOP_KEYS_COLUMNS, 900)
+  assert.ok(cols.some((c) => c.key === 'remarkName'))
+  assert.ok(cols.some((c) => c.key === 'actions'))
+})
+
+test('test_task_099_shop_table_responsive_repeated_is_idempotent', () => {
+  // 正常重复：同一宽度列集合稳定、顺序稳定。
+  assert.deepEqual(shopColumnsForWidth(SHOP_MANAGE_COLUMNS, 1100), shopColumnsForWidth(SHOP_MANAGE_COLUMNS, 1100))
+})
+
+test('test_task_099_shop_table_responsive_boundary_empty_input', () => {
+  // 边界空值：极窄宽度仍保留 always 列(店铺名/操作)。
+  const narrow = shopColumnsForWidth(SHOP_MANAGE_COLUMNS, 1)
+  assert.ok(narrow.some((c) => c.key === 'shopName'))
+  assert.ok(narrow.some((c) => c.key === 'actions'))
+})
+
+test('test_task_099_shop_table_responsive_boundary_single_item', () => {
+  // 边界单元素：恰好等于某列最小宽度时该列可见。
+  const account = SHOP_MANAGE_COLUMNS.find((c) => c.key === 'account')
+  assert.ok(account)
+  const atWidth = shopColumnsForWidth(SHOP_MANAGE_COLUMNS, account!.minWidth)
+  assert.ok(atWidth.some((c) => c.key === 'account'))
+})
+
+test('test_task_099_shop_table_responsive_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：未知列/空列集合被安全处理。
+  assert.deepEqual(shopColumnsForWidth([], 2000), [])
+  assert.deepEqual(shopColumnsForWidth(undefined as never, 1200), [])
+})
+
+test('test_task_099_shop_table_responsive_invalid_input_rejected', () => {
+  // 异常输入：非正宽度按最小可用处理。
+  const cols = shopColumnsForWidth(SHOP_MANAGE_COLUMNS, -10)
+  assert.ok(cols.every((c) => c.always))
+  assert.ok(cols.length > 0)
+})
+
+test('test_task_099_shop_table_responsive_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败/可操作：表格布局纯逻辑、无框架/http。
+  const mod = readSource('src/pages/shop/shop-table-layout.ts')
+  assert.equal(/axios|http\.|vue/.test(mod), false, '表格布局保持纯逻辑')
+  assert.match(mod, /SHOP_MANAGE_COLUMNS/)
+})